The invention provides sustained-release
chlorine dioxide gel comprising the following components by weight percent: 0.1% to 5.0% of
chlorine dioxide precursor, 1.0% to 10.0% of gel, 0.01% to 2.0% of chelating agent, 0.1% to 10.0% of inclusion agent, 30% to 70% of activating agent, 0.1% to 5.0% of sustained-
release agent, 0.1% to 5.0% of stabilizing agent and deionized water in balancing amount. The sustained-release
chlorine dioxide gel of the invention is capable of conducting the stable sustained-release process at a certain rate for 3 to 6 months, so the sustained-release chlorine dioxidegel has the advantages of long release period, uniform and stable release rate and lasting effect; the sustained-release
chlorine dioxide gel is capable of not only removing
formaldehyde from
indoor air in an effective, safe and lasting way and ensuring the high removal rate of
formaldehyde, but also disinfecting and sterilizing the
indoor air continuously and thoroughly purifying the
indoor air;moreover, the invention dispenses with high-purity
chlorine dioxide gas and further has the advantages of simple preparation method and convenient operation.